I was wondering how would I be able to create custom HTML forms rather than use the form builder?

I'm a web developer and find the form builder extremely limiting.

I would like to do simple stuff like this:

<div>

      <label>Firstname</label> <input id="firstName" type="text">   <label>Lastname</label> <input id="lastName" type="text">

</div>

Is there a way I can do that? I find the default forms layout (table based) very limiting as it doesn't allow

for better use screen space.